Reference Title: Primary Aluminum Water Cooling Block 40 80 120 160mm for Liquid Water Cooler Heat Sink System Silver Use For PC LapCPU Features: brand new and high quality. Internal channel of extrusion flow forming. Brazing parts in a whole Processing: vacuum brazing aluminum Treatment surface: silver oxidation Applicable to computer CPU water, industrial driver inverter, laser for head cooling, industrial cooling control cabinet. Specifications: Item Type: Water Cooling Block Material: Aluminum Alloy Color: Blue Size: 1#/2#/3#/4#/5# (Optional) 1#: 404012mm/1.571.570.47in 2#: 404012mm/1.571.570.47in (Upper water outlet) 3#: 408012mm/1.573.150.47in 4#: 4012012mm/1.574.720.47in 5#: 4016012mm/1.576.300.47in (approx.) Quantity: 1 PC (other accessories demo in the picture is not included) Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: (No retail package) 1 X Water Cooling CPU